On Monday, advocates said Corbett’s decision has cost Pennsylvania $500 million in federal funds in 2014 that could be providing health care for 500,000 people. The said money also would give a financial boost to hospitals and local heath care providers, and eventally create upwards of 35,000 jobs. The federal government will pay 100 percent of the cost of the expansion for several years, before the federal share eventually drops to 90 percent.